Expert: William J Perkins - 1/1/2010

Question
Hello,
I have a Patek Philippe watch witch belonged to my father.
I would be grateful for any information about this watch, how many of those were made etc.
Below i submit photos and all information i managed to gather about this watch.

The watch works when I wind it.
The strap and buckle, probably aren't original.
The watch is in excellent condition.

Brand: Patek Philippe & Co., Geneve
Movement No: 838.697
Calibre: 9'''90; manual winding
Case No: 509.852
Style: Reference 1486, 18K yellow gold
Type of dial: Silvered, raised hour markers in yellow gold
Date of manufacture: 1946
Date of sale: February 28th, 1947
Leather strap.
Dimensions: 40mm x 24mm x 9,5mm
Weight: 42g

Below I submit the photos of this watch.

Thank you for any help.

http://img43.imageshack.us/img43/7320/extract.jpg
http://img188.imageshack.us/img188/4618/pp1bc.jpg
http://img85.imageshack.us/img85/6484/pp2n.jpg
http://img94.imageshack.us/img94/3770/pp3p.jpg
http://img43.imageshack.us/img43/7821/pp4l.jpg
http://img199.imageshack.us/img199/4306/pp5u.jpg
http://img51.imageshack.us/img51/2137/pp6t.jpg
http://img709.imageshack.us/img709/8018/pp7o.jpg
http://img64.imageshack.us/img64/1033/pp8.jpg
http://img64.imageshack.us/img64/5830/pp9e.jpg
http://img64.imageshack.us/img64/4475/pp10.jpg  

Answer
Per my agreement with allexperts I respond only to questions related to mechanical clocks.  In this instance I feel it appropriate to make some comment.  Patek Phillip, has, for many years, been one of the world's premier watchmakers.  They are still very much in business and I suggest you address your questions directly to them.  They do have a presence on the Internet.  Regards WJP